Brand Doss Model 1168 Quantity 1 Color Yellowish green + black Bluetooth Version V3.0 Operating Range 10 meter Compatibility Various cellphones Microphone No Channels 2 Signal to Noise Ratio(SNR) 86dB Supports Music Format MP3 Compatible With Various cellphones Total Power 1.5W Impedance 6ohm Built-in Battery Capacity 500mAh Other Features Voltage: 3.7V 500mAh; Backup battery: 3.7V 1020mAh; Charging voltage: 5V / 500mA; Interface: micro USB; Smart voice indicating; Chinese / English speaking; Metal appearance; Bottom dock can provide charge for speaker and cellphones Packing List 1 x Speaker 1 x Charging dock 1 x USB cable (33cm) 1 x Audio cable (31cm) 1 x OTG cable (12cm)